Preparation of polyurethane nanocomposites via covalent incorporation of functionalized graphene and its shape memory effect

Amine-graphene oxide/waterborne polyurethane nanocomposites: effects of different amine modifiers on physical properties

“…In this respect, it is imperative to develop a facile and friendly method to efficiently vest graphene with high dispersity in solvents or polymer matrix with the assistance of simultaneous surface modification. Covalent functionalization on the surface of GNSs is an effective strategy for fabricating GNS-based polymer composites, which is an available method for improving the interfacial interactions between GNSs and polymer matrix [18][19][20][21][22][23]. The graphene oxide (GO), the precursor of GNS, has abundant functional groups on the surface including hydroxyls, epoxides, and carboxyls, which provide the reactive site for covalent functionalization.…”

Facile preparation, characterization and performance of noncovalently functionalized graphene/epoxy nanocomposites with poly(sodium 4-styrenesulfonate)

“…covalent functionalization and noncovalent modification. In the former case, covalent modification of GO with polyamines, isocyanates or other functional molecules is effective for dispersing GO promoting its mixing capability with hydrophobic polymers to form nanocomposites [9][10][11][12][13][14]. These agents react with carboxyl or hydroxyl groups of GO, yielding covalent linkages at the GO-polymer interface, thereby promoting efficient stress transfer during mechanical testing.…”

Functional shape memory composite nanofibers with graphene oxide filler

“…What is more, the graphene materials are promising for fabricating polymer nanocomposites [29][30][31].…”